Many other locations set records for the greatest cumulative/consecutive number of 100 degree days (Sacramento set a similar record for consecutive 110F degree days). This includes the state capitol of Sacramento, as well as portions of the northern and eastern San Francisco Bay Area (Santa Rosa and Livermore) and the Mendocino County interior (Ukiah), where temperatures reached a truly extraordinary 115F to 118F. Countless cities from northern Mexico to western Canada broke long-standing September monthly temperature records–some on multiple days–and some locations in northern California experienced their singularly hottest days on record…period. In Southern California, this was an unbearably humid heatwave in Northern California, this was a much drier but even hotter event. To start the month, the most severe September heatwave on record in the Western United States (and the worst heatwave in any calendar month, in some places) roasted California and adjacent states for 7-10 days. Well, it sure has been a September to remember in California, weather-wise. The first two weeks of September 2022 were the hottest such weeks on record across most of the Western United States. 0 Comments A record-shattering September heat event…and a tropical storm.

California rain